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Diffstat (limited to 'randint.sh')
-rwxr-xr-x | randint.sh | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/randint.sh b/randint.sh new file mode 100755 index 0000000..5b2e1d6 --- /dev/null +++ b/randint.sh @@ -0,0 +1,38 @@ +#!/bin/bash + +print_help() { + echo "Usage: $0 [options] [Min] Max" + echo -e "\nOptions:" + echo " -h, --help print a brief description of this program and give this help list" +} + +get_randint() { + if [ -z $2 ]; then + local min=1 + local max=$1 + else + local min=$1 + local max=$2 + fi + echo $(( $RANDOM % $(( $max - $min + 1 )) + $min )) +} + +if [ -z $1 ] ; then + # No arguments passed + echo "Error: missing Max boundary" + print_help + exit +fi + +case $1 in + -h | --help) + echo "randint.sh is a bash script that can generate a random integer between 1 (or a given Min boundary) and a given Max boundary" + print_help + exit + ;; + + *) + get_randint $1 $2 + ;; +esac + |